A magnetic encoder test fixture

Abstract

The utility model relates to a kind of magnetic encoding type encoder test tool. Including main shaft, tool fixed shell, rotor support piece, stator support piece;Main shaft bottom end is equipped with mounting hole;Main shaft is connected with servo motor through mounting hole;Tool fixed shell bottom end is equipped with mounting groove;Tool fixed shell is connected with photoelectric sensor through mounting groove, and the upper surface of tool fixed shell is connected with stator support piece;The upper surface of main shaft is connected with rotor support piece. It solves the technical problem that part of test tool in the prior art due to design defects, more parts are needed in core mechanism, not only lead to cost difficult to control, but also because the matching error accumulation between parts, the design error of tool itself is larger, further influence the precision of test, cannot satisfy the test demand of high-precision magnetic encoding type encoder.

Description

Technical Field

[0001] This utility model relates to the field of testing fixtures, and in particular to a testing fixture for magnetic encoders. Background Technology

[0002] As a high-precision position detection device, magnetic encoders play a crucial role in fields such as servo motors and industrial automation. Their measurement accuracy and operational stability directly affect the performance of the entire equipment system. Therefore, accurate and stable testing of magnetic encoders is a key step in ensuring their quality and reliability.

[0003] In the testing of magnetic encoders, the testing fixture is an indispensable core piece of equipment. It needs to provide a stable installation environment and precise transmission fit for the encoder to ensure the accuracy of the test results. However, existing magnetic encoder testing fixtures on the market have revealed many problems during long-term use. On the one hand, their long-term operational stability is insufficient, making it difficult to maintain stable accuracy during continuous testing, resulting in large fluctuations in test data and affecting the accurate judgment of encoder performance. On the other hand, the fixture's complex structure not only increases manufacturing and maintenance costs but also makes it difficult to quickly diagnose problems when malfunctions occur during testing, delaying the testing progress. Furthermore, the complex structure also leads to difficulties in disassembly and assembly, causing significant inconvenience for encoder installation, replacement, and fixture maintenance.

[0004] In addition, some test fixtures have design flaws that require a large number of parts for the core mechanism. This not only makes it difficult to control costs, but also causes the fixtures themselves to have large design errors due to the accumulation of fit errors between parts. This further affects the accuracy of the test and makes it impossible to meet the testing requirements of high-precision magnetic encoders. Utility Model Content

[0005] This application provides a testing fixture for magnetic encoders, which solves the technical problem that some existing testing fixtures have design flaws, requiring a large number of parts for the core mechanism. This not only makes it difficult to control costs, but also results in large design errors in the fixture itself due to the accumulation of fit errors between parts, further affecting the accuracy of the test and failing to meet the testing requirements of high-precision magnetic encoders.

[0006] The technical solutions adopted in the embodiments of this application are as follows.

[0007] A magnetic encoder testing fixture includes a main shaft, a fixture fixing housing, a rotor support, and a stator support. The main shaft has a mounting hole at its bottom end and is connected to a servo motor via the mounting hole. The fixture fixing housing has a mounting groove at its bottom end and is connected to a photoelectric sensor via the mounting groove. The upper surface of the fixture fixing housing is connected to the stator support. The upper surface of the main shaft is connected to the rotor support.

[0008] As a further improvement to the above technical solution:

[0009] A further technical solution is as follows: the rotor support is detachably connected to the main shaft; the stator support is detachably connected to the tooling fixing housing.

[0010] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0011] Thanks to its modular design, comprising a main shaft, fixture housing, rotor support, and stator support, the fixture utilizes high-strength, high-stability materials to manufacture key components. The precise and reliable connections between components minimize errors caused by deformation or loosening. Stable connection to the photoelectric sensor provides a stable benchmark for testing, enabling the fixture to maintain high accuracy during prolonged continuous operation with minimal data fluctuations, ensuring accurate performance assessment of the magnetic encoder. The fixture comprises only core components such as the main shaft, fixture housing, rotor support, and stator support, resulting in a simple and compact structure. When problems arise during testing, each component can be quickly inspected and troubleshooted, significantly reducing troubleshooting time and improving testing efficiency. The rotor support is detachably connected to the main shaft, and the stator support is detachably connected to the fixture housing, using simple bolts and other fasteners for fixing and disassembly. This makes operation more convenient when changing to different models of magnetic encoders or performing maintenance on the fixture, reducing the workload of operators. The refined use of parts in the core mechanism reduces procurement and manufacturing costs, contributing to overall production cost control. Meanwhile, the streamlined structure reduces the number of mating links between parts, lowers error accumulation, and results in smaller tooling design errors, which can meet the testing requirements of high-precision magnetic encoders and ensure the accuracy of the test. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a magnetic encoder testing fixture according to the present invention.

[0013] Figure 2 This is a cross-sectional view of the overall structure of a magnetic encoder testing fixture according to this utility model.

[0014] In the diagram: 1. Main spindle; 11. Mounting hole; 2. Tooling fixing housing; 21. Mounting slot; 3. Rotor support; 4. Stator support. Detailed Implementation

[0015] This application provides a testing fixture for magnetic encoders, which solves the technical problem that some existing testing fixtures have design flaws, requiring a large number of parts for the core mechanism. This not only makes it difficult to control costs, but also results in large design errors in the fixture itself due to the accumulation of fit errors between parts, further affecting the accuracy of the test and failing to meet the testing requirements of high-precision magnetic encoders.

[0016] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows:

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] A testing fixture for magnetic encoders, such as Figure 1 and Figure 2 As shown, it includes a spindle 1, a fixture fixing housing 2, a rotor support 3, and a stator support 4; the bottom end of the spindle 1 has a mounting hole 11; the spindle 1 is connected to a servo motor through the mounting hole 11; the bottom end of the fixture fixing housing 2 has a mounting groove 21; the fixture fixing housing 2 is connected to a photoelectric sensor through the mounting groove 21, and the upper surface of the fixture fixing housing 2 is connected to the stator support 4; the upper surface of the spindle 1 is connected to the rotor support 3.

[0019] The rotor support 3 is detachably connected to the main shaft 1; the stator support 4 is detachably connected to the tooling fixing housing 2.

[0020] The spindle 1 is made of high-strength alloy material, possessing excellent rigidity and wear resistance. Its bottom mounting hole 11 is an internally threaded hole, allowing for a secure connection to the output shaft of the servo motor via bolts, ensuring stable rotation of the spindle 1 under servo motor drive. The upper surface of the spindle 1 has evenly distributed threaded holes for detachable connection to the rotor support 3, facilitating the replacement of the appropriate rotor support 3 for different models of magnetic encoder rotors.

[0021] The fixture mounting housing 2 is made of lightweight aluminum alloy, which reduces the overall weight while maintaining good structural stability. The mounting groove 21 at its bottom matches the shape of the photoelectric sensor. The inner side of the mounting groove 21 has a positioning pin hole. After precise positioning with the photoelectric sensor using the positioning pin, it is then tightened with screws, ensuring the reliability and positional accuracy of the connection between the fixture mounting housing 2 and the photoelectric sensor. The upper surface of the fixture mounting housing 2 is machined with a flat mounting surface and has multiple threaded connection holes. The stator support 4 is detachably connected to the fixture mounting housing 2 through these threaded holes, facilitating the replacement and maintenance of the stator support 4.

[0022] Both the rotor support 3 and the stator support 3 are specially designed according to the rotor and stator structure of the magnetic encoder and are manufactured using precision machining technology to ensure good fit with the encoder components.

[0023] Beneficial effects

[0024] The fixture, consisting of a main shaft 1, a fixture housing 2, a rotor support 3, and a stator support 4, utilizes high-strength, high-stability materials to manufacture key components. The precise and reliable connections between these components minimize errors caused by deformation or loosening. Stable connection to the photoelectric sensor provides a stable benchmark for testing, enabling the fixture to maintain high accuracy during prolonged continuous operation with minimal data fluctuations, ensuring accurate performance assessment of the magnetic encoder. The fixture comprises only core components such as the main shaft 1, fixture housing 2, rotor support 3, and stator support 4, resulting in a simple and compact structure. When problems arise during testing, each component can be quickly inspected and troubleshooted, significantly reducing troubleshooting time and improving testing efficiency. The rotor support 3 is detachably connected to the main shaft 1, and the stator support 4 is detachably connected to the fixture housing 2, using simple bolts and other fasteners for fixing and disassembly. This makes operation more convenient when replacing different models of magnetic encoders or performing maintenance on the fixture, reducing the workload of operators. The refined design of core components reduces procurement and manufacturing costs, thus helping to control overall production costs. Simultaneously, the streamlined structure reduces the number of mating steps between parts, minimizing error accumulation and resulting in smaller tooling design errors. This ensures that the testing requirements for high-precision magnetic encoders are met, guaranteeing testing accuracy.

[0025] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A testing fixture for a magnetic encoder, characterized in that: It includes a main spindle (1), a tooling fixing shell (2), a rotor support (3), and a stator support (4); the main spindle (1) has a mounting hole (11) at its bottom end; the main spindle (1) is connected to a servo motor through the mounting hole (11); the tooling fixing shell (2) has a mounting groove (21) at its bottom end; the tooling fixing shell (2) is connected to a photoelectric sensor through the mounting groove (21), and the upper surface of the tooling fixing shell (2) is connected to the stator support (4); the upper surface of the main spindle (1) is connected to the rotor support (3).

2. The testing fixture for the magnetic encoder according to claim 1, characterized in that: The rotor support (3) is detachably connected to the main shaft (1); the stator support (4) is detachably connected to the tooling fixing shell (2).

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